Abhinav K Rao, Trang Minh Thi Nguyen, Jenna Brennan Magri, Joseph Wolfgang Mathews
JCEM Case Reports, Volume 2, Issue 10, October 2024, luae151
https://doi.org/10.1210/jcemcr/luae151
Adrenal adenomas are benign tumors of the adrenal cortex that may secrete excess hormones, such as cortisol. They are most commonly discovered during imaging studies for unrelated problems. Lipomatous metaplasia is a rare degenerative change in adrenal adenomas, characterized by the presence of adipose tissue and hematopoietic elements within the tumor. In this report, we present a case of an adrenal adenoma with lipomatous metaplasia in a patient with hypertension, hyperlipidemia, and type II diabetes mellitus. The discovery of this adrenal mass was prompted by an evaluation of the patient’s progressive hirsutism. The tumor was found to be secreting cortisol, leading to Cushing syndrome. The patient subsequently underwent surgical resection of the mass after being treated with mifepristone. The histopathological examination confirmed it to be an adrenal cortical neoplasm with lipomatous metaplasia, characterized by uncertain malignant potential. The patient did well postoperatively. Three months after left adrenalectomy, the patient's hirsutism, A1c, and hypertension improved, allowing a reduction in antihypertensives. Her body mass index stabilized, her triglyceride decreased, and her dehydroepiandrosterone sulfate level normalized. She continued to do well at follow-up visits. Overall, this was a rare case of a functioning adrenal adenoma with lipomatous metaplasia, presenting both diagnostic and therapeutic challenges.
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